chore(deps-dev): bump eslint from 8.57.1 to 9.21.0

Bumps [eslint](https://github.com/eslint/eslint) from 8.57.1 to 9.21.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint/compare/v8.57.1...v9.21.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -21,7 +21,7 @@
     "lint": "eslint --ext .js --ext .jsx --ext .json ."
   },
   "devDependencies": {
-    "eslint": "^8.56.0",
+    "eslint": "^9.21.0",
     "eslint-config-hexo": "^5.0.0",
     "eslint-plugin-json": "^3.1.0",
     "eslint-plugin-react": "^7.33.2"